Across
- 3. solid crust of the planet
- 6. warm, low latitude areas near the equator
- 7. 365.25 days of the Earth traveling around the sun
- 9. includes all life forms
- 10. all of Earth's water
- 13. tropic located 23.5 degrees North of the Equator
- 14. envelope of gasees that surrounds Earth's surface
- 16. major body that orbits a star
- 17. circle located 66.5 degrees north of the Equator
Down
- 1. smaller objects that orbit a planet
- 2. time that Earth's poles point at their greatest angle towards or away from the sun
- 4. surroundings made up of the four spheres
- 5. cold areas around the North and South Poles
- 8. energy that comes from the sun
- 11. 24 hour spin of the Earth's axis
- 12. smaller object that orbits a larger object
- 13. Tropic located 32.5 degrees south of the equator
- 14. circle located 66.5 degrees south of the Equator
- 15. occurs twice per year as the Earth's poles are not pointed towards or away from the sun
